Hi Geir, sorry to use the dreadful sentence but it's all explained in the manual. The latest release of the Power_CL has four banks and uses Library#4 (so it's a 4x4 deal).
The ROM id# in the CL Module Database is PWRL (I think, I always use a fresher copy from sRAM). Let me know if you have doubts and I'll send you the ROM images via email.
Cheers,
ÁM
Edited to add:
I see the confusion may be in that there is another version of the CL_Utils available in the CL Library, which also uses Library#4. That is the module "4UTL" - but note that that's not bank-switched, as it was an earlier project that provided Lib#4 enhancements for the (even earlier) "CLUT" module...
so the time line would be:
1. CLUT - initial module, 4k, no Lib#4
2. 4UTL - Lib#4 enhancement for the above
3. PWRL - 4-banks enhancement for the above..
Hope this clarifies :-)
Edited: 20 Mar 2013, 8:48 a.m.